test-data-mcp-server

The server demonstrates good security practices: - Database credentials are loaded from environment variables. - SQL queries use prepared statements, preventing SQL injection for parameterized values. - Input validation is explicitly performed on all tool parameters, checking types, ranges, and allowed enum values. - There is no use of `eval` or dynamic code execution from external input. - Error handling is structured, providing clear JSON-RPC error responses and tool-specific error payloads. - The server operates over `stdio` which is an IPC mechanism, reducing direct network exposure. One point deduction as it's not using an ORM which would fully abstract SQL, but the current approach with prepared statements is robust.